题解 | #高精度整数加法#

import java.util.Scanner;
import java.math.BigInteger;
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) { 
            String a = in.nextLine();
            String b = in.nextLine();
            BigInteger j = new BigInteger(a);
            BigInteger k = new BigInteger(b);
            System.out.println(j.add(k));
        }
    }
}